/* ============================================================
   Insight Bay — Blog / Insights article system
   Builds on the site design system (styles.css custom props).
   Everything namespaced .ib-art* / .ib-kc / .ib-diag / .ib-xpl
   so it can never collide with portal or page styles.
   ============================================================ */

/* ---------- Article hero ---------- */
.ib-art-hero { padding: 4.5rem 0 2.5rem; background:
    radial-gradient(circle at 12% 0%, rgba(201,100,66,.08), transparent 45%),
    linear-gradient(170deg, var(--ib-bg-hero-top) 0%, var(--ib-bg) 70%); }
.ib-art-hero h1 { font-size: clamp(1.9rem, 4.2vw, 2.9rem); line-height: 1.15; max-width: 820px; }
.ib-art-standfirst { font-size: 1.18rem; color: var(--ib-ink-soft); max-width: 740px; margin-top: 1.1rem; line-height: 1.65; }
.ib-art-breadcrumb { font-size: .82rem; color: var(--ib-ink-muted); margin-bottom: 1.2rem; }
.ib-art-breadcrumb a { color: var(--ib-ink-muted); text-decoration: none; }
.ib-art-breadcrumb a:hover { color: var(--ib-accent); }

.ib-art-byline { display: flex; flex-wrap: wrap; align-items: center; gap: .9rem 1.5rem; margin-top: 1.6rem;
  padding-top: 1.4rem; border-top: 1px solid var(--ib-line); }
.ib-art-byline .who { display: flex; align-items: center; gap: .7rem; }
.ib-art-avatar { width: 42px; height: 42px; border-radius: 50%; background: var(--ib-emphasis-bg);
  color: var(--ib-emphasis-text); display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.05rem; flex: none; }
.ib-art-byline .name { font-weight: 600; font-size: .95rem; }
.ib-art-byline .cred { font-size: .8rem; color: var(--ib-ink-muted); }
.ib-art-meta { font-size: .85rem; color: var(--ib-ink-muted); display: flex; gap: 1rem; flex-wrap: wrap; }
.ib-art-meta span { white-space: nowrap; }

/* ---------- Layout: sticky TOC + reading column ---------- */
.ib-art-layout { display: grid; grid-template-columns: 1fr; gap: 2.5rem; }
@media (min-width: 1000px) {
  .ib-art-layout { grid-template-columns: 230px minmax(0, 720px); gap: 4rem; justify-content: center; }
}
.ib-art-body { max-width: 720px; min-width: 0; }

.ib-toc { font-size: .88rem; }
@media (min-width: 1000px) { .ib-toc { position: sticky; top: 96px; align-self: start; } }
.ib-toc summary, .ib-toc .ib-toc-title { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ib-ink-muted); font-weight: 600; margin-bottom: .8rem; cursor: pointer; }
.ib-toc ol { list-style: none; padding: 0; margin: 0; border-left: 1px solid var(--ib-line); }
.ib-toc li a { display: block; padding: .42rem .9rem; color: var(--ib-ink-soft); text-decoration: none;
  border-left: 2px solid transparent; margin-left: -1.5px; line-height: 1.4; transition: color .15s, border-color .15s; }
.ib-toc li a:hover { color: var(--ib-accent); }
.ib-toc li a.is-active { color: var(--ib-accent); border-left-color: var(--ib-accent); font-weight: 600; }
@media (max-width: 999px) {
  .ib-toc details { background: var(--ib-bg-soft); border: 1px solid var(--ib-line); border-radius: var(--ib-radius-sm); padding: .9rem 1.1rem; }
  .ib-toc summary { margin-bottom: 0; }
  .ib-toc details[open] summary { margin-bottom: .8rem; }
}

/* ---------- Article prose ---------- */
.ib-art-body > p, .ib-art-body li { font-size: 1.05rem; line-height: 1.75; color: var(--ib-ink-soft); }
.ib-art-body > p { margin-bottom: 1.25rem; }
.ib-art-body h2 { font-size: 1.65rem; margin: 3rem 0 1rem; scroll-margin-top: 90px; }
.ib-art-body h3 { font-size: 1.22rem; margin: 2rem 0 .8rem; scroll-margin-top: 90px; }
.ib-art-body ul, .ib-art-body ol { padding-left: 1.3rem; margin: 0 0 1.25rem; }
.ib-art-body li { margin-bottom: .5rem; }
.ib-art-body strong { color: var(--ib-ink); }
.ib-art-body a { color: var(--ib-accent); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; }
.ib-art-body a:hover { color: var(--ib-accent-hover); }
.ib-art-body .math, .ib-art-body code { font-family: var(--ib-font-mono); font-size: .92em;
  background: var(--ib-bg-deep); padding: .08em .35em; border-radius: 5px; white-space: nowrap; }
.ib-art-lede::first-letter { font-size: 3.1em; float: left; line-height: .85; padding: .08em .12em 0 0; font-weight: 700; color: var(--ib-accent); }

/* ---------- Figures (inline SVG diagrams) ---------- */
.ib-figure { margin: 2rem 0; background: var(--ib-card-bg); border: 1px solid var(--ib-line);
  border-radius: var(--ib-radius); padding: 1.4rem; }
.ib-figure svg { width: 100%; height: auto; display: block; }
.ib-figure figcaption { font-size: .85rem; color: var(--ib-ink-muted); margin-top: .9rem; line-height: 1.5;
  padding-top: .8rem; border-top: 1px dashed var(--ib-line); }
.ib-figure figcaption strong { color: var(--ib-ink-soft); }
/* SVG text inherits theme */
.ib-figure svg text { font-family: var(--ib-font-sans); fill: var(--ib-ink-soft); }
.ib-figure svg .svg-ink { fill: var(--ib-ink); }
.ib-figure svg .svg-muted { fill: var(--ib-ink-muted); }
.ib-figure svg .svg-accent { fill: var(--ib-accent); }
.ib-figure svg .svg-gold { fill: var(--ib-gold); }
.ib-figure svg .svg-success { fill: var(--ib-success); }
.ib-figure svg .svg-line { stroke: var(--ib-line-strong); }
.ib-figure svg .svg-axis { stroke: var(--ib-ink-muted); }
.ib-figure svg .svg-grid { stroke: var(--ib-grid-line); }
.ib-figure svg .svg-accent-stroke { stroke: var(--ib-accent); }
.ib-figure svg .svg-soft-fill { fill: var(--ib-bg-deep); }

/* ---------- Callouts ---------- */
.ib-callout { border: 1px solid var(--ib-line); border-left: 3px solid var(--ib-accent);
  background: var(--ib-bg-soft); border-radius: var(--ib-radius-sm); padding: 1.2rem 1.4rem; margin: 1.8rem 0; }
.ib-callout .label { font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; font-weight: 700;
  color: var(--ib-accent); margin-bottom: .5rem; display: flex; align-items: center; gap: .45rem; }
.ib-callout p { font-size: .98rem !important; margin-bottom: .6rem !important; }
.ib-callout p:last-child { margin-bottom: 0 !important; }
.ib-callout--research { border-left-color: var(--ib-gold); }
.ib-callout--research .label { color: var(--ib-gold); }
.ib-callout--misconception { border-left-color: #A4543F; }
.ib-callout--parent { border-left-color: var(--ib-success); }
.ib-callout--parent .label { color: var(--ib-success); }

/* Worked example */
.ib-worked { background: var(--ib-card-bg); border: 1px solid var(--ib-line); border-radius: var(--ib-radius);
  margin: 1.8rem 0; overflow: hidden; }
.ib-worked .head { padding: .85rem 1.4rem; background: var(--ib-bg-deep); font-weight: 600; font-size: .92rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.ib-worked .head .tag { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ib-ink-muted); font-weight: 600; }
.ib-worked .inner { padding: 1.3rem 1.4rem; }
.ib-worked .inner p { font-size: 1rem; margin-bottom: .9rem; }
.ib-worked .inner p:last-child { margin-bottom: 0; }

/* Misconception pair */
.ib-misc-pair { display: grid; gap: 1px; background: var(--ib-line); border: 1px solid var(--ib-line);
  border-radius: var(--ib-radius-sm); overflow: hidden; margin: 1.8rem 0; }
@media (min-width: 640px) { .ib-misc-pair { grid-template-columns: 1fr 1fr; } }
.ib-misc-pair > div { background: var(--ib-card-bg); padding: 1.1rem 1.3rem; }
.ib-misc-pair .mp-label { font-size: .72rem; letter-spacing: .13em; text-transform: uppercase; font-weight: 700; margin-bottom: .45rem; }
.ib-misc-pair .mp-wrong .mp-label { color: #A4543F; }
.ib-misc-pair .mp-right .mp-label { color: var(--ib-success); }
.ib-misc-pair p { font-size: .95rem !important; margin: 0 !important; }

/* ---------- Knowledge check (interactive) ---------- */
.ib-kc { background: var(--ib-card-bg); border: 1px solid var(--ib-line-strong); border-radius: var(--ib-radius);
  margin: 2rem 0; overflow: hidden; }
.ib-kc .kc-head { display: flex; align-items: center; gap: .6rem; padding: .8rem 1.4rem;
  background: var(--ib-emphasis-bg); color: var(--ib-emphasis-text); font-size: .8rem; font-weight: 600;
  letter-spacing: .1em; text-transform: uppercase; }
.ib-kc .kc-head svg { flex: none; }
.ib-kc .kc-q { padding: 1.2rem 1.4rem .4rem; font-weight: 600; font-size: 1.02rem; }
.ib-kc .kc-opts { padding: .6rem 1.4rem 1.2rem; display: grid; gap: .55rem; }
.ib-kc button.kc-opt { text-align: left; padding: .75rem 1rem; border: 1px solid var(--ib-line-strong);
  border-radius: var(--ib-radius-sm); background: var(--ib-bg-soft); color: var(--ib-ink); font-size: .96rem;
  cursor: pointer; transition: border-color .15s, background .15s; font-family: inherit; line-height: 1.45; }
.ib-kc button.kc-opt:hover:not(:disabled) { border-color: var(--ib-accent); }
.ib-kc button.kc-opt:disabled { cursor: default; opacity: .55; }
.ib-kc button.kc-opt.is-correct { border-color: var(--ib-success); background: color-mix(in srgb, var(--ib-success) 12%, var(--ib-bg-soft)); opacity: 1; }
.ib-kc button.kc-opt.is-wrong { border-color: #A4543F; background: color-mix(in srgb, #A4543F 10%, var(--ib-bg-soft)); opacity: 1; }
.ib-kc .kc-explain { display: none; margin: 0 1.4rem 1.3rem; padding: 1rem 1.2rem; border-radius: var(--ib-radius-sm);
  background: var(--ib-bg-deep); font-size: .93rem; line-height: 1.6; color: var(--ib-ink-soft); }
.ib-kc .kc-explain.is-open { display: block; }
.ib-kc .kc-explain .verdict { font-weight: 700; display: block; margin-bottom: .35rem; }
.ib-kc.kc-answered-right .kc-explain .verdict { color: var(--ib-success); }
.ib-kc.kc-answered-wrong .kc-explain .verdict { color: #A4543F; }

/* ---------- Diagnostic checklist (interactive) ---------- */
.ib-diag { background: var(--ib-card-bg); border: 1px solid var(--ib-line-strong); border-radius: var(--ib-radius);
  padding: 1.6rem; margin: 2.2rem 0; }
.ib-diag .diag-title { font-weight: 700; font-size: 1.12rem; margin-bottom: .35rem; }
.ib-diag .diag-sub { font-size: .9rem; color: var(--ib-ink-muted); margin-bottom: 1.1rem; }
.ib-diag label.diag-item { display: flex; gap: .75rem; align-items: flex-start; padding: .65rem .8rem;
  border-radius: var(--ib-radius-sm); cursor: pointer; transition: background .15s; font-size: .97rem; line-height: 1.5; }
.ib-diag label.diag-item:hover { background: var(--ib-bg-deep); }
.ib-diag label.diag-item input { margin-top: .3rem; accent-color: var(--ib-accent); width: 16px; height: 16px; flex: none; }
.ib-diag .diag-actions { margin-top: 1.1rem; display: flex; gap: .7rem; flex-wrap: wrap; align-items: center; }
.ib-diag .diag-result { display: none; margin-top: 1.2rem; padding: 1.2rem 1.3rem; border-radius: var(--ib-radius-sm);
  background: var(--ib-bg-deep); border-left: 3px solid var(--ib-accent); font-size: .96rem; line-height: 1.65; }
.ib-diag .diag-result.is-open { display: block; }
.ib-diag .diag-result h4 { font-size: 1rem; margin-bottom: .4rem; }
.ib-diag .diag-result p { margin: 0 0 .6rem; font-size: .95rem; }
.ib-diag .diag-result p:last-child { margin-bottom: 0; }

/* ---------- Practice portal CTA ---------- */
.ib-practice-cta { display: flex; gap: 1.1rem; align-items: flex-start; background:
    radial-gradient(circle at 100% 0%, rgba(201,100,66,.12), transparent 60%), var(--ib-bg-deep);
  border: 1px solid var(--ib-line-strong); border-radius: var(--ib-radius); padding: 1.3rem 1.4rem; margin: 2rem 0; }
.ib-practice-cta .icon { flex: none; width: 40px; height: 40px; border-radius: 10px; background: var(--ib-accent);
  color: #fff; display: flex; align-items: center; justify-content: center; }
.ib-practice-cta .body-text { flex: 1; min-width: 0; }
.ib-practice-cta h4 { font-size: 1rem; margin-bottom: .3rem; }
.ib-practice-cta p { font-size: .9rem !important; color: var(--ib-ink-soft); margin: 0 0 .7rem !important; }
.ib-practice-cta a.go { font-weight: 600; font-size: .92rem; color: var(--ib-accent); text-decoration: none; }
.ib-practice-cta a.go:hover { text-decoration: underline; }

/* ---------- Step list ---------- */
.ib-steps { list-style: none; padding: 0; margin: 1.8rem 0; counter-reset: ibstep; }
.ib-steps > li { position: relative; padding: 0 0 1.4rem 3rem; counter-increment: ibstep; }
.ib-steps > li::before { content: counter(ibstep); position: absolute; left: 0; top: .05rem; width: 2rem; height: 2rem;
  border-radius: 50%; background: var(--ib-emphasis-bg); color: var(--ib-emphasis-text); font-weight: 700; font-size: .9rem;
  display: flex; align-items: center; justify-content: center; }
.ib-steps > li:not(:last-child)::after { content: ''; position: absolute; left: .95rem; top: 2.4rem; bottom: .2rem; width: 1px; background: var(--ib-line-strong); }
.ib-steps > li > strong:first-child { display: block; font-size: 1.05rem; margin-bottom: .25rem; color: var(--ib-ink); }

/* ---------- Tables ---------- */
.ib-table-wrap { overflow-x: auto; margin: 1.8rem 0; border: 1px solid var(--ib-line); border-radius: var(--ib-radius-sm); }
.ib-table-wrap table { width: 100%; border-collapse: collapse; font-size: .92rem; min-width: 540px; }
.ib-table-wrap th { text-align: left; padding: .7rem 1rem; background: var(--ib-bg-deep); font-size: .78rem;
  letter-spacing: .08em; text-transform: uppercase; color: var(--ib-ink-soft); border-bottom: 1px solid var(--ib-line-strong); }
.ib-table-wrap td { padding: .7rem 1rem; border-bottom: 1px solid var(--ib-line); vertical-align: top; color: var(--ib-ink-soft); }
.ib-table-wrap tr:last-child td { border-bottom: none; }
.ib-table-wrap td:first-child { font-weight: 600; color: var(--ib-ink); }

/* ---------- Tabs (e.g. state comparison) ---------- */
.ib-xpl-tabs { display: flex; gap: .4rem; flex-wrap: wrap; margin-bottom: 1rem; }
.ib-xpl-tabs button { padding: .5rem 1rem; border-radius: 999px; border: 1px solid var(--ib-line-strong);
  background: var(--ib-bg-soft); color: var(--ib-ink-soft); font-size: .87rem; font-weight: 600; cursor: pointer;
  font-family: inherit; transition: all .15s; }
.ib-xpl-tabs button:hover { border-color: var(--ib-accent); color: var(--ib-accent); }
.ib-xpl-tabs button.is-active { background: var(--ib-emphasis-bg); color: var(--ib-emphasis-text); border-color: var(--ib-emphasis-bg); }
.ib-xpl-panel { display: none; }
.ib-xpl-panel.is-active { display: block; }

/* ---------- Year-level explorer ---------- */
.ib-explorer { background: var(--ib-card-bg); border: 1px solid var(--ib-line-strong); border-radius: var(--ib-radius);
  padding: 1.6rem; margin: 2.2rem 0; }
.ib-explorer .xp-title { font-weight: 700; font-size: 1.12rem; margin-bottom: .3rem; }
.ib-explorer .xp-sub { font-size: .9rem; color: var(--ib-ink-muted); margin-bottom: 1.1rem; }
.ib-explorer .xp-years { display: flex; gap: .35rem; flex-wrap: wrap; margin-bottom: 1.2rem; }
.ib-explorer .xp-years button { width: 2.6rem; height: 2.6rem; border-radius: 10px; border: 1px solid var(--ib-line-strong);
  background: var(--ib-bg-soft); font-weight: 700; font-size: .92rem; color: var(--ib-ink-soft); cursor: pointer;
  font-family: inherit; transition: all .15s; }
.ib-explorer .xp-years button:hover { border-color: var(--ib-accent); color: var(--ib-accent); }
.ib-explorer .xp-years button.is-active { background: var(--ib-accent); border-color: var(--ib-accent); color: #fff; }
.ib-explorer .xp-out h4 { font-size: 1.05rem; margin-bottom: .6rem; }
.ib-explorer .xp-strand { padding: .8rem 0; border-top: 1px solid var(--ib-line); display: grid; grid-template-columns: 130px 1fr; gap: 1rem; }
@media (max-width: 560px) { .ib-explorer .xp-strand { grid-template-columns: 1fr; gap: .25rem; } }
.ib-explorer .xp-strand .s-name { font-weight: 600; font-size: .88rem; color: var(--ib-accent); }
.ib-explorer .xp-strand .s-desc { font-size: .93rem; color: var(--ib-ink-soft); line-height: 1.55; }
.ib-explorer .xp-link { margin-top: 1rem; }

/* ---------- Takeaways / next steps ---------- */
.ib-takeaways { background: var(--ib-emphasis-bg); color: var(--ib-emphasis-text); border-radius: var(--ib-radius);
  padding: 1.8rem 1.9rem; margin: 2.5rem 0; }
.ib-takeaways h3, .ib-takeaways h2 { color: var(--ib-emphasis-text); margin: 0 0 1rem !important; font-size: 1.25rem; }
.ib-takeaways ul { list-style: none; padding: 0; margin: 0; }
.ib-takeaways li { padding: .55rem 0 .55rem 1.9rem; position: relative; color: var(--ib-emphasis-text-soft);
  font-size: .98rem; line-height: 1.6; border-bottom: 1px solid var(--ib-emphasis-line); }
.ib-takeaways li:last-child { border-bottom: none; }
.ib-takeaways li::before { content: ''; position: absolute; left: 0; top: 1.05rem; width: 9px; height: 9px;
  border-radius: 50%; background: var(--ib-accent); }

/* ---------- Article footer: author, related ---------- */
.ib-art-author { display: flex; gap: 1.2rem; align-items: flex-start; background: var(--ib-bg-soft);
  border: 1px solid var(--ib-line); border-radius: var(--ib-radius); padding: 1.5rem; margin: 3rem 0 0; }
.ib-art-author .ib-art-avatar { width: 56px; height: 56px; font-size: 1.3rem; }
.ib-art-author h4 { font-size: 1.02rem; margin-bottom: .25rem; }
.ib-art-author p { font-size: .92rem !important; color: var(--ib-ink-soft); margin: 0 0 .6rem !important; line-height: 1.6; }
.ib-art-author a { font-size: .9rem; font-weight: 600; }

.ib-art-related { margin-top: 3.5rem; }
.ib-art-related h2 { font-size: 1.4rem; margin-bottom: 1.4rem; }

/* Shared post-card (hub + related rails) */
.ib-post { background: var(--ib-card-bg); border: 1px solid var(--ib-line); border-radius: var(--ib-radius);
  overflow: hidden; display: flex; flex-direction: column; transition: transform .25s ease, box-shadow .25s ease;
  text-decoration: none; color: inherit; }
a.ib-post:hover { transform: translateY(-3px); box-shadow: var(--ib-shadow); }
.ib-post .thumb { aspect-ratio: 16/9; position: relative; border-bottom: 1px solid var(--ib-line); background:
    radial-gradient(circle at 30% 30%, rgba(201,100,66,.22), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(181,138,58,.14), transparent 45%),
    linear-gradient(160deg, var(--ib-bg-hero-top) 0%, var(--ib-bg-deep) 100%); }
.ib-post .thumb::after { content: attr(data-eq); position: absolute; inset: 0; display: flex; align-items: center;
  justify-content: center; font-family: var(--ib-font-serif); font-style: italic; font-size: 1.9rem;
  color: var(--ib-ink); opacity: .82; padding: 0 1rem; text-align: center; }
.ib-post .body { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; gap: .5rem; }
.ib-post .cat { font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--ib-accent); font-weight: 600; }
.ib-post h3 { font-size: 1.18rem; margin-top: .25rem; line-height: 1.35; }
.ib-post .dek { color: var(--ib-ink-soft); font-size: .95rem; line-height: 1.55; }
.ib-post .meta { color: var(--ib-ink-muted); font-size: .85rem; margin-top: auto; padding-top: .6rem; }

/* Featured card (hub) */
.ib-featured { display: grid; grid-template-columns: 1fr; }
.ib-featured .thumb { aspect-ratio: 16/9; border-bottom: 1px solid var(--ib-line); }
.ib-featured .thumb::after { font-size: clamp(1.1rem, 3.2vw, 1.8rem); }
@media (min-width: 820px) {
  .ib-featured { grid-template-columns: 1fr 1fr; }
  .ib-featured .thumb { aspect-ratio: auto; border-bottom: none; border-right: 1px solid var(--ib-line); }
}

/* ---------- Hub: stream rails + filters ---------- */
.ib-stream-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; margin-bottom: 1.2rem; }
.ib-stream-head h2 { font-size: 1.45rem; }
.ib-stream-head .note { font-size: .88rem; color: var(--ib-ink-muted); }
.ib-filter-bar { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
.ib-filter-bar button { padding: .5rem 1.05rem; border-radius: 999px; border: 1px solid var(--ib-line-strong);
  background: var(--ib-bg-soft); color: var(--ib-ink-soft); font-size: .86rem; font-weight: 600; cursor: pointer;
  font-family: inherit; transition: all .15s; }
.ib-filter-bar button:hover { border-color: var(--ib-accent); color: var(--ib-accent); }
.ib-filter-bar button.is-active { background: var(--ib-emphasis-bg); color: var(--ib-emphasis-text); border-color: var(--ib-emphasis-bg); }
.ib-post.is-filtered-out { display: none; }
.ib-soon { border: 1px dashed var(--ib-line-strong); border-radius: var(--ib-radius); padding: 1.4rem 1.5rem;
  background: transparent; }
.ib-soon .cat { color: var(--ib-ink-muted); }
.ib-soon h3 { color: var(--ib-ink-soft); }
.ib-soon .badge-soon { display: inline-block; font-size: .7rem; letter-spacing: .12em; text-transform: uppercase;
  font-weight: 700; color: var(--ib-gold); border: 1px solid var(--ib-gold); border-radius: 999px; padding: .15rem .6rem; margin-bottom: .6rem; }

/* ---------- Inline footnote-ish citation ---------- */
.ib-cite { font-size: .82rem; color: var(--ib-ink-muted); }

/* ---------- Print: make articles useful on paper ---------- */
@media print {
  .ib-nav, .ib-mobile-menu, .ib-sticky-cta, .ib-toc, .ib-footer, .ib-art-related, .ib-newsletter,
  .ib-kc .kc-opts, .ib-practice-cta, .ib-scroll-progress { display: none !important; }
  .ib-art-layout { grid-template-columns: 1fr; }
  body { background: #fff; color: #111; }
  .ib-kc .kc-explain { display: block; }
}